Typewriting machine



June 5, 1923.

' 1,457,730 P. DE CLAMECY I TYBEWRITING MACHINE Filed Oct. 5, 1918 2 Sheets-Sheet 1 fl-Z. 3 5' /j 27 q 7 27 June 5; 1923.

1,457, 730 P. DE CLAMECY TYPEWRITING MACHINE Filed Oct. 3, 1918 2 Sheets-Sheet "2 Patented June 5, 1923.

U Nitan] s that is PHILIPPE DE GLAMEQY OIE onaannsdiown, MASSACHUSETTS; assrenon To onm TYPEWRITER COMPANY, me, orenoron, NEW YORK, A ooaPonA'rioN can-aw;

YORK.

rizriiwaii'iuo MACHINE.

hiiplication fil ed cache, 1918. serial no. ates-71.

To all whom 'z' tfmiiy' cbncin: I H s V Be'it' known that I, Pmilirrn on CLAMnor, a citizenof the United'Sta'tes, and a resident of Charlestown, in the county of Suf- 5 folk and State of Massachiis'etts,have invented certain new and useful Improvements 'in Typewrit ing Machines, of which,

the following is a specification. r

The object ofthis invention is toprovide a simple and practical device for automaticallyv 'rewinding the ribbonon the empty reel; and the invention consists of certain novel features of construction hereinafter described and claimed. In the drawings;

Fig. 1 is a view partlyfin vertical section and partly in side elevation showing m showing thetrip-arms at a difierent working 'angle, the object of which is'toreduce the strain on the ribbon; p i s Fig- 7 is a horizontal section on the line 77'o-f Fig. 1;

Fig. 8 is a' vertical section: on the line 8-8 of Fig. 7; q I I Figs. 9, 10 and 11 are difierent views of the spool or reel. H A Referring to the drawings by referencecharacters, the numeral 3 designates a pa r of fingers whose lower ends extend through 4.0 slots 31 in the lower flange of the ribbon spool or reel and are pivoted at $8 to dependings cars 29 carried by said lower flange, the positions of these pivots 38 be ng such that when the fingers stand upright theyliein vertical grooves 3 formed in opposite sides of the reel hub 25. The upper edges 0t these fingers extend up through radial slots 27 formed the upper flange 7' of the reel. When the ribbon 27" is woundupon the hub, the fingers 3 are confined in the channels 3. The end of theribbon may be fastened to the hub in any suitable manner; prefer 1 employinga snap-spring or clamp 23 huch as shown in Fig. 3.

Each 7 of the fingers :3 is pro vided at lower end with a radial arm 7 extending;

outwardly and a link 8 ispivote'd at 39' to the outer end of each of these arms.

These links depend downwardly and in? wardly and are. pivotally attached atiO; to the upper end of a cone 9 whose small end faces downwardly and which is pro,- vided with an axial bore to enable it to slide readily on the reel-shaft. -Betw'een the top of this cone andthe thrust Washer 42 is a light coil-spring 41, said washer being arranged to thrust against shoulders j onthe lower ends of fingers 8, so that the normal tendency of spring 41 is to spread the fingers 3 radially apart and force the cone 9 downwardly. The ribbon windings;

oh the reel hold the fihghrsfs; in the hub-' channels and the cone 9 in its v upper posi tlon, with the spring l1 under. compression-.j

Slidingly mounted on' apart 1 6 of the frame of the machine'is a. bar 15 which ex;

tends across the machine and .is provided at each end with a pull-ringfil l through) which the adjacent reel-shaft extends. and; which lies-in the path of the adjacentslide able, cone 9. This bar is guided by suitable.

guides 10 and 14 affixed to the frame-mem ber 16, and at each end this bar is provided -f with a dependinglug 20 on which issupe, ported a bar 19, the bar being'supp'orted -in slots v37 to permit it to have a .sidewise movement fore and aft of the =machine. At

each end of this bar 19 is provided a pawl 21 which is. adapted to engage a ratchet, 7

wheel 22 afiiXed tothe adjacent reel-shaft.

In Fig. 1, the pawl '21" at the leftis out of engagement with its associated ratchet;- wheel and the pull-ring 34: is in positionto be actuatedto pull bar 15 toward the left; when the cone is thrown downwardlyby its spring 41. At-the opposite side of the machine it will be understood, the corresponding parts are in the reverse position, 5

namely, the pawl in. engagement with the ratchet and the center of the pull-ring shift ed laterally tothe right of the axis of the elevated cone. 1 With the parts in these po e sitions, it will be seen that the vibration of the bar 19 backward and forwardcauses" the rotation of the right hand reel-shaft" which has its ratchet-operating mechanism in operative position. This bar 19'rnay be' reciprooated in any suitable mannergtha't is to say, it may be itself a universal bar arranged in position to be struck by the type-bars or it may be connected to the usual universal bar of the machine and be reciprocated in unison therewith.

Upon exhaustion of the ribbon from the spool which, is unwinding, the fingers 3 are released and the spring 41 throws down the shifter-cone. The cone impinges against the inner side of the outer portion of the laterally offset pull-ring and thus reverses the spool-driving mechanism by pulling the rod 15 endwise far enough to bring the idle pawl 21 into position where it will operate upon the spool of the exhausted reel. This operation will of course shift thepull-ring at the other end of the rod 15 into position for actuation by the shifter-cone at that side when the reel at that side in turn becomes exhausted. After each actuation, cone 9 is drawn upwardly away from the pull-ring by the pressure of the rewinding ribbon upon the fingers 3, as is evident, so that the shiftercones are held up out of the way of the pullrings except during the short period of time it takes to make one or two turn in the rewind. The idea of using the cone for actuating the reverse-rod 15 is that, irrespective of the position of the reel, the cone will always be in position to actuate the pull-ring when the cone is thrust downwardly.

Any suitable devices may be employed to hold the reversing-bar 15 in either of its two positions; I have shown a round-ended pin 12 which is confined in a recess 17 formed in the frame-part 16 and is actuated by a coilspring 18 to normally press against the un der side of the-bar 15, this bar being provided with a notch 13 to receive this pin when the adjacent ratchet-device is in engagement. A similar holding device is arranged at the other side of the machine. Instead of two of these holding devices, one at each side of the machine, a single one may be employed, this single one being adapted to cooperate with two adjacent notches 13.

It will be observed that the slots 37 curve upwardly, it being desirable'tocurve these slots on the arc of a circle described from the center of the rocking point of the universal bar of the machine, to thereby avoid binding of the rod 19 in said slots 37. To prevent torsion of the fingers 3, they are arranged to extend up through the slots 27 and have their side edges fit against the side walls of the slots when the pull of the re- Winding ribbon forces the fingers 3 back into the hub-slots 3; this ensures ease of movement of the parts by preventing binding, and this ease of movement together with the shape and proportions of the levers formed by the fingers 3 and their connected arms 7 reduces the strain on the ribbon in raising the cone to a minimum; for instance, the

parts may be so proportioned that if the pull of the ribbon on arms or fingers 3 is 1 ounce, the upward pull at 39 may be, say, 4, ounces, thus ensuring compression of the spring 11 with the least possible strain on the ribbon.

The nature and scope of the invention having been thus indicated and its preferred embodiment having been specifically described, what is claimed as newis:

1. Ina typewriting machine, a ribbon-reel, a cone rotating therewith and means which upon the exhaustion of the ribbon reciprocates the cone, and a ribbon-drive adapted to be reversed by the reciprocation of the cone.

2. In a typewriting machine, ribbon-reel, a cone carried thereby and rotated therewith,

means carried by the reel for reciprocating the cone upon exhaustion of the ribbon, and means operated by the reciprocation of the cone for reversing the 1lbbO11 dPlVG.

3. In a typewriting machine, a ribbon-reel, a shifter carried by the reel and means also carried by the reel for automatically reciprocating this shifter on exhaustion of the ribbon, and a ribbon-drive adapted to be reversed by reciprocation of said shifter.

1-. In a typewriting machine, a ribbon-reel, a finger pivoted therein and adapted to be held up by the ribbon winding, a shifter and means connecting it to said finger to reciprocate the shifter when the finger is released, a spring for actuating the finger and the shifter, and a ribbon-drive adapted to be reversed by the movement of the shifter,

5. Ribbon feeding mechanism for writing machines, comprising a pair of ribbon spools, driven members rotatable with the spools, driving means, a drive-reversing device slidable endwise for connecting the driven members alternately withthe driving means, and a pair of ribbon-controlled spring-operated cam devices associated with different spools and shiftable alternately by their operating springs transverselyof said reversing device upon exhaustion of the ribbon from the respective spools and slidably engaging said reversing device to cam the same endwise in opposite directions, each cam device shifting the reversing device during movement of the cam device by its operating spring.

6. Ribbon feeding mechanism for writing,

machines, comprising a pair of spool shafts, spools rotatable with the shafts, driven memhere rotatable with the shafts,driving means,

a feed-reversing member shiftable endwise in opposite directions transversely of the shafts for connecting the driven members alternately with the driving means, a pair of ribbon-controlled cam devices reciprocable longitudinally on the shafts upon exhaust-ion of a ribbon from the respective spools to alternately slidably engage and shift the feed-reversing member endwise in opposite directions, each cam device actuating the reversing member during movement of the cam device in one direction on the shaft. 7

7; In a typewriting machine, a ribbon-reel, a pair of pivoted fingers adapted to lie against the hub and'each provided with a radial arm, a cone slidable on the reel shaft connected to said arms by pivoted links, a spring confined between the cone and the lower ends of said fingers, and a ribbon-v drive adapted to be reversed by the recipro cation of said cone.

8. In a typewriting machine, a ribbon-reel and an automatic shifter carried thereby, a'

each reel into said slots, each of these levers being pivoted to thelower flange of the reel and provided with outwardly extending arms, and spring-actuated shifting devices connected to said outwardly extending arms.'.

10. In a typewriting machine, the combination of a pair of ribbon" spools, a pair of feedreversing cones, ribbon 4 controlled means for reciprocating the cones, and means for rotating the spools settable by said cones successively upon exhaustion of the ribbon from a spool to reverse thedirection of feed of the ribbon.

I 11. In a typewriting machine, the combination of apair of ribbon spools, a pair of feed reversing cones, ribbon controlled means for reciprocating the cones, a pair of driven members rotatable with the spools, a pair of driving members, and means shiftable alternately in opposite directions by the, cones for rendering first one and then the other of said driving members effective to actuate its associated driven member.

12. In a typewriting. machine, a ribbon drive embodying a reciprocable bar having a ring at each end and carrying the feedpawls, and a device associated with each spool for engaging in one of said rings for shifting said bar uponexhaustionof the ribbon. I

13. Ribbon feeding and reversing means comprising a pair of ribbon spools, a pair of bell-crank levers rotatable with each spool having arms adapted to be pulled toward each other by a ribbon wound upon the spools and arms extending radially of the 1 spools, means. for rotatably supporting the spools, a pair of cones, a pair of links connecting each cone with the radia'llyextending arms of one pair of bell-crank levers, springs for moving the cones upon exhaustion of a ribbon from the spools, and means operable by thecones alternately for rendering'a spool-rotating means effective on one spool-and ineffective on the other spool. 1 Ribbonfeeding and reversing mecha nism comprlsing a pair of rotatable shafts,

spools held to the shafts to rotate therewith,

ratchet wheels fixed on the shafts, a ,vibra-' tory pawl carrier, pawls" on said carrier, 'a' reversing member shiftable transversely of- I I rier for moving the carrier transversely of its path of vibration to render one pawleffective and the other ineffective, and ribbon-- the shafts and connected with the pawl carretracted spring-operated cam. devices for shifting said member alternately inxopposite directions, each cam device being movable transversely of the revers ng member and arranged to shift said member during move;

ment of the'device byits operating spring.

15. Ribbonfe'eding and reversing mechanism compris ng a pair of rotatable shafts,

spools held to the. shafts torotate therewith,

ratchet wheels fixed on the shafts, a" vibra tory pawl carrier, pawls on said carrier, a

'-' membershiftable transversely of the shafts and connected with the-pawl carrier for moving the "carriertransversely. of its path of vibration to render one pawl effective and theoothe'r ineffective, spring-pressed' devices f slidably held to the shafts for'shifting said member alternately in opposite directions, and ribbon actuated meansfor retracting said devices.

, 16. In a ribbon feeding mamas; the

combination of a pair of ribbon-spools, driv-' ing means, driven members rotatable with the spools, a feed-reversing member, having a pair of circular apertures therein and connected with the driving means, a pair of cones rotatable with said spools and reciprocable insaid apertures to shift said revers--,

ing member alternately in opposite directions to connect the driven members alter- "nately with the driving means, and ribboncontrolled means for reciprocatingtheicones alternately upon exhaustion of :a ribbon] 7 from the respective spools.

This specification signedthisfifth dayof September, A. D. 1918.

PHILIPPE E CLAMECY. 

